private void DrawNormalLayer(Surface surface, int layerIndex, ScreenSection section)
{
// Draw each line from left to right.
var layer = Map.Layers[layerIndex];
for (var y = section.TileTop; y < section.TileTop + section.TileHeight; y++) {
for (var x = section.TileLeft; x < section.TileLeft + section.TileWidth; x++) {
var tileIndex = layer.GetTileIndex(x, y);
var tile = Map.GetSurfaceForTileId(tileIndex);
var position = section.GetTilePosition(x, y);
surface.Blit(tile, position);
}
}
}
public void Draw(Surface surface, ScreenSection section)
{
for (int i = 0; i < Map.Layers.Count; i++) {
var layer = Map.Layers[i];
if (layer.Type == LayerType.Collision) {
continue;
} else if (layer.Type == LayerType.Object) {
DrawObjectLayer(surface, i, section);
} else {
DrawNormalLayer(surface, i, section);
}
}
}
private void DrawObjectLayer(Surface surface, int layerIndex, ScreenSection section)
{
// Draw the layer line by line, each time asking our delegate to draw its
// objects beforehand.
int actionLayerIndex = Map.GetActionLayerIndex(layerIndex);
var newSection = new ScreenSection();
newSection.TileLeft = section.TileLeft;
newSection.TileWidth = section.TileWidth;
newSection.TileSize = section.TileSize;
newSection.XOffset = section.XOffset;
newSection.YOffset = section.YOffset;
newSection.TileHeight = 1;
for (int i = section.TileTop; i < section.TileTop + section.TileHeight; i++) {
newSection.TileTop = i;
DrawObjects(surface, actionLayerIndex, newSection);
DrawNormalLayer(surface, layerIndex, newSection);
}
}